Malicious PDF — malware analysis report

Static analysis result for SHA-256 90c169ff195322a8…

MALICIOUS

PDF

52.0 KB Created: 2020-08-08 02:59:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c833b23bc83b5c5890b92ad20fff492b SHA-1: 0d169f0ac497b97eb884f254b0f629a7ad2a8892 SHA-256: 90c169ff195322a89097be084e564e03b7c1e0bb17c211a9e8af1d767d5c8418
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on 'cdn.shopify.com'. The ML classifier strongly indicated maliciousness. The embedded URL in the document body also points to the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=gum+arabic+uses+pdf In PDF document text
    • http://files.thepureprescription.com/uploads/1/3/1/8/131857465/6591216.pdfIn PDF document text
    • http://files.bamboogrove.net.au/uploads/1/3/0/7/130738714/jurirewid.pdfIn PDF document text
    • http://files.cnycatholiccalendar.com/uploads/1/3/2/6/132681634/varodefos_sasikokirase_gujofi.pdfIn PDF document text
    • http://files.egpscotland.org/uploads/1/3/1/4/131406149/dojubexofa.pdfIn PDF document text
    • http://files.lamsgolflinks.com/uploads/1/3/0/7/130739260/9123076.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0713/0270/files/chester_county_property_records.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/geruwitinerujezejat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3350/0565/files/badugupobonot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4768/2201/files/terodosim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/vikobawoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/category_theory_introduction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0817/8845/files/mopobodinobovabolarefax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/11066289457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/61282453026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9996/files/totimegil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/63607216757.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA3 5440 bytes
SHA-256: 342f8da451fd753210ba67a2b12240f6f21df5cf7a6609d6dbbd1129dbfd149b
font_01_sfnt_off0000a00a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA00A 10144 bytes
SHA-256: bee0313055c92c755af5edb70aaa3a20b61c73592d2c90fd6ca2a333899cf40e

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